UNIX for Advanced & Expert Users

a.txt

[a.s1.txt]
conn1=stg
conn2=dev
path=\xxx\a1.txt
fre=a

[a.s2.txt]
conn1=stg
conn2=dev
path=\xxx\a2.txt
freq=a


awk '/a/{ORS=" "}{print}END{print "\n"}' a.txt


[a.s1.txt] conn1=stg conn2=dev path=\xxx\a1.txt fre=a   [a.s2.txt] conn1=stg conn2=dev path=\xxx\a2.txt freq=a


I am expecting the below

[a.s1.txt] conn1=stg conn2=dev path=\xxx\a1.txt fre=a

[a.s2.txt] conn1=stg conn2=dev path=\xxx\a2.txt freq=a

awk '$1=$1' RS= OFS=" " ORS="\n\n" a.txt

awk '/\[/ {printf("%s%s",NR>1?"\n":"",$0);next}
{printf(" %s",$0)}
END{print ""}' file

[a.s1.txt]
conn1=stg
conn2=dev
path=\xxx\a1.txt
fre=a
[a.s2.txt]
conn1=stg
conn2=dev
path=\xxx\a2.txt
freq=a

EXPECTING O/P


[a.s1.txt]
conn1=stg
conn2=dev
path=\xxx\a1.txt
fre=a
connection=SRC
[a.s2.txt]
conn1=stg
conn2=dev
path=\xxx\a2.txt
freq=a
connection=SRC